/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label12.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:08:39,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:08:39,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:08:39,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:08:39,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:08:39,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:08:39,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:08:39,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:08:39,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:08:39,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:08:39,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:08:39,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:08:39,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:08:39,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:08:39,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:08:39,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:08:39,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:08:39,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:08:39,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:08:39,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:08:39,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:08:39,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:08:39,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:08:39,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:08:39,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:08:39,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:08:39,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:08:39,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:08:39,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:08:39,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:08:39,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:08:39,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:08:39,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:08:39,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:08:40,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:08:40,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:08:40,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:08:40,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:08:40,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:08:40,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:08:40,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:08:40,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:08:40,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:08:40,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:08:40,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:08:40,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:08:40,050 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:08:40,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:08:40,051 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:08:40,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:08:40,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:08:40,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:08:40,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:08:40,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:08:40,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:08:40,052 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:08:40,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:08:40,053 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:08:40,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:08:40,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:08:40,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:08:40,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:08:40,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:08:40,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:40,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:08:40,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:08:40,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:08:40,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:08:40,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:08:40,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:08:40,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:08:40,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:08:40,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:08:40,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:08:40,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:08:40,581 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:08:40,582 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:08:40,583 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label12.c [2020-09-25 10:08:40,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/befac5330/8d171e59a73e476688540bdd4a3d5bc3/FLAG52600f8c2 [2020-09-25 10:08:41,307 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:08:41,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label12.c [2020-09-25 10:08:41,328 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/befac5330/8d171e59a73e476688540bdd4a3d5bc3/FLAG52600f8c2 [2020-09-25 10:08:41,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/befac5330/8d171e59a73e476688540bdd4a3d5bc3 [2020-09-25 10:08:41,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:08:41,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:08:41,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:41,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:08:41,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:08:41,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:41" (1/1) ... [2020-09-25 10:08:41,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64f92ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:41, skipping insertion in model container [2020-09-25 10:08:41,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:41" (1/1) ... [2020-09-25 10:08:41,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:08:41,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:08:42,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:42,428 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:08:42,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:42,549 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:08:42,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:42 WrapperNode [2020-09-25 10:08:42,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:42,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:08:42,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:08:42,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:08:42,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:42" (1/1) ... [2020-09-25 10:08:42,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:42" (1/1) ... [2020-09-25 10:08:42,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:42" (1/1) ... [2020-09-25 10:08:42,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:42" (1/1) ... [2020-09-25 10:08:42,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:42" (1/1) ... [2020-09-25 10:08:42,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:42" (1/1) ... [2020-09-25 10:08:42,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:42" (1/1) ... [2020-09-25 10:08:42,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:08:42,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:08:42,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:08:42,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:08:42,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:42,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:08:42,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:08:42,776 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:08:42,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:08:42,776 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:08:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:08:42,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:08:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:08:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:08:42,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:08:42,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:08:44,218 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:08:44,219 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:08:44,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:44 BoogieIcfgContainer [2020-09-25 10:08:44,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:08:44,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:08:44,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:08:44,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:08:44,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:08:41" (1/3) ... [2020-09-25 10:08:44,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b37ea35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:44, skipping insertion in model container [2020-09-25 10:08:44,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:42" (2/3) ... [2020-09-25 10:08:44,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b37ea35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:44, skipping insertion in model container [2020-09-25 10:08:44,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:44" (3/3) ... [2020-09-25 10:08:44,239 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label12.c [2020-09-25 10:08:44,252 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:08:44,264 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:08:44,288 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:08:44,324 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:08:44,324 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:08:44,324 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:08:44,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:08:44,325 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:08:44,325 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:08:44,325 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:08:44,325 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:08:44,359 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:08:44,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 10:08:44,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:44,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:44,382 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:44,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:44,390 INFO L82 PathProgramCache]: Analyzing trace with hash 463353353, now seen corresponding path program 1 times [2020-09-25 10:08:44,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:44,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399685925] [2020-09-25 10:08:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:44,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:44,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:45,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:45,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:46,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:46,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:46,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:47,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:48,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:49,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:49,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 10:08:49,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:08:49,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:08:49,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:49,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:49,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:49,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:08:49,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 10:08:49,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:08:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:49,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:49,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:49,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:49,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:49,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:08:49,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:49,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:08:49,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:50,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399685925] [2020-09-25 10:08:50,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:08:50,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:08:50,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877618824] [2020-09-25 10:08:50,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:08:50,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:50,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:08:50,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:08:50,112 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:08:52,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:52,385 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 10:08:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:08:52,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 10:08:52,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:52,415 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 10:08:52,415 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 10:08:52,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:08:52,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 10:08:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 10:08:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 10:08:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 10:08:52,527 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 144 [2020-09-25 10:08:52,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:52,528 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 10:08:52,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:08:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 10:08:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 10:08:52,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:52,537 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:52,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:08:52,538 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:52,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:52,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1919685948, now seen corresponding path program 1 times [2020-09-25 10:08:52,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:52,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951106470] [2020-09-25 10:08:52,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:52,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:52,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:53,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:53,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:55,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:57,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:57,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 10:08:57,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:08:57,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:08:57,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:57,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:57,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:08:57,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 10:08:57,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 10:08:57,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:08:57,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:57,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:57,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:57,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:57,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:57,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:08:57,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:57,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:08:57,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:57,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:08:57,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 10:08:57,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:08:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:57,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:57,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:57,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:08:57,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:57,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 10:08:57,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:57,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:57,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:57,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:08:57,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:57,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951106470] [2020-09-25 10:08:57,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:08:57,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:08:57,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847773887] [2020-09-25 10:08:57,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:08:57,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:57,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:08:57,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:08:57,924 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 10:08:59,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:59,759 INFO L93 Difference]: Finished difference Result 1536 states and 1967 transitions. [2020-09-25 10:08:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:08:59,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2020-09-25 10:08:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:59,768 INFO L225 Difference]: With dead ends: 1536 [2020-09-25 10:08:59,769 INFO L226 Difference]: Without dead ends: 943 [2020-09-25 10:08:59,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:08:59,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-09-25 10:08:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 921. [2020-09-25 10:08:59,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2020-09-25 10:08:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1109 transitions. [2020-09-25 10:08:59,822 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1109 transitions. Word has length 178 [2020-09-25 10:08:59,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:59,823 INFO L479 AbstractCegarLoop]: Abstraction has 921 states and 1109 transitions. [2020-09-25 10:08:59,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:08:59,823 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1109 transitions. [2020-09-25 10:08:59,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 10:08:59,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:59,832 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:59,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:08:59,833 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:59,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:59,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1258115336, now seen corresponding path program 1 times [2020-09-25 10:08:59,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:59,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793604213] [2020-09-25 10:08:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:59,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:00,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:02,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:02,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:04,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:04,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:04,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 10:09:04,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:09:04,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 10:09:04,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:04,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:09:04,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:09:04,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-09-25 10:09:04,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:05,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:05,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:05,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:05,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:05,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:05,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:09:05,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:05,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:05,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:05,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:05,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:05,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:05,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:05,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:05,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:05,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:09:05,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:05,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 10:09:05,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:05,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:05,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:05,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:09:05,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:09:05,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793604213] [2020-09-25 10:09:05,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:05,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:09:05,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226070779] [2020-09-25 10:09:05,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:09:05,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:05,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:09:05,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:09:05,354 INFO L87 Difference]: Start difference. First operand 921 states and 1109 transitions. Second operand 7 states. [2020-09-25 10:09:07,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:07,546 INFO L93 Difference]: Finished difference Result 2447 states and 3055 transitions. [2020-09-25 10:09:07,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:09:07,552 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 182 [2020-09-25 10:09:07,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:07,568 INFO L225 Difference]: With dead ends: 2447 [2020-09-25 10:09:07,569 INFO L226 Difference]: Without dead ends: 1548 [2020-09-25 10:09:07,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:09:07,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2020-09-25 10:09:07,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1526. [2020-09-25 10:09:07,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1526 states. [2020-09-25 10:09:07,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 1917 transitions. [2020-09-25 10:09:07,659 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 1917 transitions. Word has length 182 [2020-09-25 10:09:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:07,660 INFO L479 AbstractCegarLoop]: Abstraction has 1526 states and 1917 transitions. [2020-09-25 10:09:07,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:09:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 1917 transitions. [2020-09-25 10:09:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 10:09:07,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:07,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:07,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:09:07,671 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:07,672 INFO L82 PathProgramCache]: Analyzing trace with hash -15613156, now seen corresponding path program 1 times [2020-09-25 10:09:07,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:07,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163213469] [2020-09-25 10:09:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:07,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:07,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:08,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:08,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:12,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:12,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-09-25 10:09:12,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 10:09:12,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:09:12,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:12,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:12,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-09-25 10:09:12,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:12,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:12,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:12,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:12,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:12,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:12,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:09:12,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:12,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:12,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:13,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:13,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 10:09:13,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:13,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-25 10:09:13,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:13,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:09:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:13,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:09:13,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:09:13,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163213469] [2020-09-25 10:09:13,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:13,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:09:13,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473071537] [2020-09-25 10:09:13,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:09:13,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:13,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:09:13,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:09:13,677 INFO L87 Difference]: Start difference. First operand 1526 states and 1917 transitions. Second operand 10 states. [2020-09-25 10:09:17,884 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-09-25 10:09:18,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:18,016 INFO L93 Difference]: Finished difference Result 4445 states and 5792 transitions. [2020-09-25 10:09:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:09:18,017 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 213 [2020-09-25 10:09:18,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:18,032 INFO L225 Difference]: With dead ends: 4445 [2020-09-25 10:09:18,032 INFO L226 Difference]: Without dead ends: 2806 [2020-09-25 10:09:18,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:09:18,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-09-25 10:09:18,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2501. [2020-09-25 10:09:18,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2501 states. [2020-09-25 10:09:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2501 states to 2501 states and 3133 transitions. [2020-09-25 10:09:18,152 INFO L78 Accepts]: Start accepts. Automaton has 2501 states and 3133 transitions. Word has length 213 [2020-09-25 10:09:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:18,152 INFO L479 AbstractCegarLoop]: Abstraction has 2501 states and 3133 transitions. [2020-09-25 10:09:18,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:09:18,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 3133 transitions. [2020-09-25 10:09:18,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 10:09:18,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:18,165 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:18,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:09:18,165 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:18,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:18,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1374839553, now seen corresponding path program 1 times [2020-09-25 10:09:18,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:18,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944798796] [2020-09-25 10:09:18,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:23,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:23,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 10:09:23,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:09:23,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 10:09:23,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:23,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 10:09:23,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 10:09:23,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:23,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:23,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:23,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:23,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:09:23,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:23,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:09:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:23,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:09:23,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:23,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:23,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:23,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:09:23,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 10:09:23,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:23,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:09:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:09:23,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:23,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 10:09:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:23,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:23,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:23,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 10:09:23,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:23,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 10:09:23,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:23,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:23,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:09:23,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:23,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:09:23,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 10:09:23,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944798796] [2020-09-25 10:09:23,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:23,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:09:23,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758496340] [2020-09-25 10:09:23,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:09:23,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:23,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:09:23,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:09:23,740 INFO L87 Difference]: Start difference. First operand 2501 states and 3133 transitions. Second operand 8 states. [2020-09-25 10:09:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:26,906 INFO L93 Difference]: Finished difference Result 5554 states and 7152 transitions. [2020-09-25 10:09:26,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:09:26,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-09-25 10:09:26,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:26,923 INFO L225 Difference]: With dead ends: 5554 [2020-09-25 10:09:26,923 INFO L226 Difference]: Without dead ends: 2977 [2020-09-25 10:09:26,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:09:26,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-09-25 10:09:27,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 2947. [2020-09-25 10:09:27,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2947 states. [2020-09-25 10:09:27,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2947 states to 2947 states and 3618 transitions. [2020-09-25 10:09:27,018 INFO L78 Accepts]: Start accepts. Automaton has 2947 states and 3618 transitions. Word has length 222 [2020-09-25 10:09:27,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:27,018 INFO L479 AbstractCegarLoop]: Abstraction has 2947 states and 3618 transitions. [2020-09-25 10:09:27,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:09:27,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2947 states and 3618 transitions. [2020-09-25 10:09:27,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 10:09:27,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:27,031 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:27,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:09:27,031 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:27,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:27,032 INFO L82 PathProgramCache]: Analyzing trace with hash -979872990, now seen corresponding path program 1 times [2020-09-25 10:09:27,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:27,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044712129] [2020-09-25 10:09:27,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:27,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:27,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:27,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:27,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking...